Jdk 1.2.2 (Sun) is not compatible anymore with Linux Red Hat 7.0 (!!!)
It crashes (Segmentation fault) when javac or java are run in the command line.
(It is ok with Linux Red Hat 6.2)
Jdk 1.3 can be run normally.
But products like JBuilder 4 (working with Jdk 1.3), ok with red hat 6.2, can't be installed (Segmentation fault again) with red hat 7.0